My coin purse has two compartments, one for money, and one for other things. The other things I keep there are transit tokens and locker coins. I still have my Canadian quarter for the PIMS lockers. It's now been joined by a UK pound coin for the British Library lockers.
Libraries are such social places for the graduate students who spend disproportionate amounts of their time in them. I ran into A.A., A.C., morchu, and chamaeleoncat in the libraries today, among others. A.C. was thrown by my temporarily straight hair. She said she only recognized me by my smile. (Part of me must be a Cheshire Cat.)
I'm surprised by how many of my footnotes-in-need-of-checking involve authors I can't remember ever hearing of before. Reading through my text, most of them are just necessary enough to be worth mentioning. Some, I've edited out of the text. Some, such as the rather obscure Julianus Pomerius, haven't be re-editioned in a century and a half as far as I can tell.